4wd Control System — Hyundai Santa Fe III (2012-2016)

4wd Control System Hyundai Santa Fe III

Transfer Case 13 illustrations ~243 words

Description

The friction material inside the coupling will degrade over time. Therefore, corresponding compensation values must be referenced and entered after replacing the controller or the coupling.

Scheme 26

Scheme 26: Compensation Requirement and Procedure

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Simultaneous replacement of 4WD ECU (Controller) and coupling Does not require compensation.
Replacement of coupling only Reset the 4WD ECU's (Controller) clutch learning.
Replacement of 4WD ECU (Controller) only Before replacement: Check the ECU's clutch learning. After replacement: Enter the original ECU's clutch learning into the replacement ECU.

Scheme 31

Scheme 31: Components Location

4WD ECU processes signals from various sensors and determines the current road and driving conditions. The ECU then utilizes this information to implement precision control over the 4WD coupling's multi-plate clutch and variably adjust the amount of torque delivered to the rear wheels.

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Scheme 32: Description

Scheme 33

Scheme 33: Power Flow Diagram

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Scheme 34: 4WD ECU Input & Output Diagram

Scheme 35

Scheme 35: 4WD ECU Connector

Pin	Function
1	CAN communication line (Low)
2	CAN communication line (High)
3
4	Pressure sensor signal(+)
5
6	Lock mode switch
7	Oil pressure motor B
8	Oil pressure motor A
9
10
11	Pressure sensor (Input)
12	Input sensor signal(-)
13	Battery power
14	Ground
15	IG power
16
17
18

Scheme 36

Scheme 36: 4WD ECU Circuit Diagram

Scheme 37

Scheme 37: Replacement

Scheme 38

Prior to replacing the 4WD ECU, check the 4WD ECU's clutch clearing with the GDS tool. (Refer to " «ADJUSTMENT»(/hyundai/santa-fe/iii-2012-2016/remont/transfer-case/#4wd-control-system) ")
Disconnect the battery negative cable from the battery
Disconnect the 4WD ECU connector (A).
Loosen the nuts (A) and then remove the 4WD ECU. Tightening torque: 9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Installation

Install in the reverse order of removal.
Prior to installing a new ECU, upload the original ECU's clutch clearing to the replacement ECU using the GDS tool. (Refer to " «ADJUSTMENT»(/hyundai/santa-fe/iii-2012-2016/remont/transfer-case/#4wd-control-system) ")